The Study of Application of High Water Material in Filling Mining Technology

Abstract

Abstract-This paper introduced the advantages about the application of high water material in the filling mining under the combination of its actual situation of coal mine. These advantages included the fluidity, expansibility, strength of backfilling, initial investment of high water material and so on. The research results showed that high water material could control the surface subsidence effectively and liberate the coal resources under water, railway and building in a great extent. The success application of the high water material has certain social benefits and economic benefits, and even embodied the concept of "Green mining", meanwhile in response to strong call of harmonious mining ecological. The governers worked in the mine at all levels should spare no efforts to afflicate the application of high water material in the filling ming technology. As the coal resource decrease obviously, we should take some measures and methods to increase the rate of recovery.

Asymmetric support technology for gob side entry retaining with high water material

“…The filling materials of gob side entry retaining mainly include concrete block, gangue, coal gangue concrete, paste material, and high water material Sun et al, 2020;Vadapalli, et al, 2012). Among them, the high water materials have the advantages of high strength and controllable setting time, which is widely used in coal mines (Bai et al, 2020;Zhao et al, 2015;Doherty et al, 2015;Altunbas et al, 2017).…”